I beliveve that all packages requiring a customs form currently have
to be handed to a clerk at a post office.
Only items weighing more than 13oz must be handed to a clerk. An international 1st class parcel can be picked up at mailbox with the custom form already attached as long as it is not over 13 oz. The 13 oz limit applies for domestic as well as international but only for stamped mail. I average about 50pcs a week internationally this way
My mail carrier recently started refusing to take any international
mailpieces with customs forms, citing a directive he had received.
Sorry if that's misinformation.
Is it possible that your one man post office is just lenient?
